Feed-grinding machine



J. H. WILLIAMS.

FEED GRINDING MACHINE.

APPLICATION FILED 02c. 16. 1919 Patented Aprf12, 1921.

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.l. H. WILLIAMS.

FEED GRINDING MACHINE.

APPLICATION FILED DEC. 16. 1919.

1,374,699, Patented Apr. 12, 1921.

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J. H. WILLIAMS.

FEED GRl-NDING MACHINE.

APPLICATIQN FILED DEC.16| 1919.

1,374,699. Patented Apr. 12, 1921.

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Specification of Letters Patent.

Patented Apr. 12, 1921.

Application filed December 18, 1919. Serial 110. 345,187.

To all whom it may concern Be 'it known that I, JosEPH H. WILLIAMS, a citizen of the United States, residin at North Kansas City, in the county of lay and State of Missouri, have invented a certain new and useful Improvement in Feed- Grinding Machines, of which the following is a speclfication.

My invention relates to improvements in feed grinding machines.

The object of my invention is to provide a feed grinding machine which, Wlll efficiently and finel grind alfalfa, hay, fodder, and similar fee material.

A further object of my invention is to provide a feed grinding machine which is simple in construction, which is cheap to manufacture, which is durable and not liable to get out of order, which has a large capacity and is not liable to being choked by the material which is being ground therein. i

-The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawings, which illustrate the preferred embodiment of my invention, I

Figure 1 is a vertical sectional view of a feed grinding machine which embodies my improvement.

Fig. 2 is a horizontal sectional view of the same.

Fig. 3 is an enlarged cross sectional view of some of the outer grinding members.

4 is a horizontal sectional view, Ipartly broken away on the line 4-4 of ig. 5 is a horizontal sectional'view on the line 5-5 of Fi 1, with the rotating cylinder and grin ing members carried thereby removed.

Fig. 6 is a top view, partly broken away, of the rotatin cylinder and some of the grinding mem ers mounted thereon.

Similar reference characters designate similar parts in the different views.

1 designates a frame which may be of any suitable form and construction, upon which are firmly secured two head plates to which are respectively secured the ends of horizontal longitudinal sets of bars 3.

4 designates internally toothed arcuate grinding members arranged in a plurality of circularly arranged sets, which are spaced apart from each other, the ends of each member 4 being rigidly attached to two ad- A plurality of circularly arranged internally toothed arcuate grinding members 8,

slmilar in form'to the grinding members 4 arearranged in sets alternately with the rmdmg members 4 and closely adjacent t ereto. The grmding members 8 are rigidly secured to a plurality of longitudinal horizontal bars 9, which have their ends respectively secured to two circular plates 10 which are rotatably mounted on the inwardly extendmg hubs 11 of the head plates 2, sald hubs 11 being concentric with the shaft 5.

{is shown in Fig. 5, the teeth 12 of each osc llatory grinding member 8 are disposed" obliquely. In like manner, the teeth 13 of each grinding member 4 are disposed obliquely but not to the same extent as the teeth 12. As shown in Fig. 3, the teeth 13 of the members 4 are laterally inclined in one direction, the teeth 12 of the members 8 being laterally inclined in the opposite direction.

The plates 10 and bars 9 serve as an oscillatory support for the grinding members 8. Oscillation of said support is effected by means of a link 14, Fig. 1, which is pivoted at one end to one of the bars 9 and which is pivoted at its other end to a bar 15, Figs. 1 and 2, which at one end is pivoted to a crank pin 16, mounted in a disk 17, which is rigidly attached to a horizontal transverse shaft 18, mounted in bearings 19 and 20. which are secured to the frame 1.

. left as viewed in Fig. 1, the screen wire 24 of the screen being inclined downwardly to the right, as viewed in Fig. 1.

Bi idly secured to the shaft 5 and encircled Ty the grinding members 4 and 8, is a rotary support comprising a horizontal cylinder 27 which is provided with a plurality, preferably four, lon 'itudinal grooves 28, Fig. 1 and Fig. 6. M bunted upon the periphery of the cylinder 27 in staggered relation to each other are a plurality of circularly disposed arcuate externally toothed grinding members 29, each of which is provided at its respective ends with inwardly turned projections 30, which are respectively mounted in two adjacent grooves 28. The teeth of the grinding members 29 are in close proximity to the teeth 12 and 13 of the members 8 and 4, and face in the direction of their revolution and in a direction opposite to that of the teeth 12 and 13, as shown in Fig.1.

The grinding members 29 are slipped onto the cylinder 27 from one end thereof and are preferably loosely mounted thereon, the shape of the grooves 28 and projections 30 serving to hold the members 29 on the cylinder.

31 designates a hopper which is supported on two of the stationary grinding members 4 and upon the top bar 3 adjacent to the feed end of the machine.

When the shaft 5 is rotated, the cylinder 27 will be rotated on its axis, and the grinding members 29 will revolve in close proximity to the grinding members 4 and 8. The grinding members 8 together with the plates 10 and bars 9 will be oscillated through the intermediacy, of the shaft 5, the pulley 22, belt 21, pulley 23, shaft 18, disk 17, crank pin 16, bar 15, and link 14. At the same time, the screen 24 will be oscillated to the right and left, as viewed in Fig. 1. If the feed material is now fedinto the machine through the hopper 31, it will pass toward the other end of the machine between the grinding members 29 and the grinding members 4 and 8. The revolving movement of the grindin members 29, will grind the material, which will be fed toward the discharge end of the machine onto the screen 24, owing to the oscillatory movement of the grinding members 8, together with the oblique inclination of the teeth 12. The opposite lateral inclination of the teeth 12 and 13 of the rinding members 8 and 4 prevents the eed material from choking. As the feed material is forced inwardly on the teeth 12 toward the cylinder 27, it will pass from one set of members 8 to the outwardly inclined teeth 13 of the next grinding members 4, thereby being prevented from wadding and choking.

The grinding members 8 and 4 are spaced slightly apart, as shown in Figs. 4 and 5, and also in Fig. 2, so that material which is sufficiently fine will pass downwardly between the grinding members and will then drop u on the screen wire 24, through which it wi 1 pass into the inclined pan or chute 26. The other feed material will pass to the discharge end of the machine and will be deposited upon the screen Wire 24. That material which is sufliciently ground and is the finished product will pass through the screen wire 24 into the pan 26. The material which is discharged from the screen 24 at the right end thereof, as viewed in Fig. 1, is not sufliciently finely ground and may be again fed into the hopper 31, and once more passed through the machine.

This operation is repeated until all of the material has been properly ground.

What I claim is 1. In a feed grinding machine, a plurality of circularly arranged grinding members, another set of rinding members similarly arranged in a ternate order between the first named grinding members, the teeth of the grinding members of each of said setsv being obliquel disposed on the inner sides of said grin ing members, the teeth of one set of grindin members being laterally inclined in one irection, the teeth of the other set of grinding members being laterally inclined in the opposite direction, means for obtaining relative oscillation between grinding members of said two sets, a rotary support encircled by said grinding members, and grinding members arranged circularly on the periphery of said rotary support and revoluble therewith and havin peripheral teeth adjacent to but space l:gpart from the first named grinding memers.

2. In a feed grinding machine, two sets of grinding members, one set being oscillatory and disposed alternately between the other sets of grinding members, each set of grinding members having obliquely disposed teeth on the inner side, a rotary support encircled by said rinding members, a plurality of periphera ly toothed grinding members mounted on said rotary support in close roximity to the first named grinding memers, the grindingv members on the rotary support being arcuate and arranged in staggered relation to each other, and means for rotating the rotary support and for oscil lating the oscillatory grinding members.

3. In a feed grinding machine, two sets of grinding members disposed in alternate order between each other and side by side, the grinding members of each set being arranged in a plurality of circles, means for effecting relative oscillation between the two sets of grinding members, a third set of grinding members disposed in close proximity to the grinding members of the first two sets and encircled thereby, andmeans i for rotating the grinding members of the third set, the teeth of thethree sets of grinding members being so disposed that upon rotation of the third set of grindin members and upon oscillation of the grin ing members of one of the other sets, the material operated upon will be fed in one direction parallel with the axis of the rotary grinding members.

4. In a feed grinding machine, a plurality of sets of circularly disposed internally toothed grinding members, means for oscillating alternate sets of said grinding members, the other sets being stationary, the teeth of the stationary sets being laterally inclined in one direction, the teeth of the oscillatory sets being inclined laterally in the opposite direction, and rotary externally toothed circularly arranged grinding members in close proximity to and encircled by the first named rinding members.

5; In a feed grinding machine, a plurality of circularly arranged sets vof internally toothed inding members, alternate sets being osci atory, the other sets being stationary and disposed side by side with the oscillatory members, the teeth of both sets being disposed obliquely, and the teeth of the two sets respectively inclining laterally in opposite directions, a rotary support encircled by said grindin members, and circularly arranged externa ly toothed grinding members mounted on said rotary support 1n close proximity to the grinding members of the other sets.

6. In a feed grinding machine, a rotary support having a plurality of longitudinal grooves, a plurality of externally toothed arcuate inding members mounted on said support 1n staggered relation to each other, each of said grinding members having at its respective ends two radial projections mounted respectively in two of said grooves, a plurality of circularly arranged sets of internally toothed grinding members encircling and in close' proximity to the first named grinding members, and means for oscillating alternate sets of the encircling grinding members.

In testimony whereof I have signed my name to this specification.

JOSEPH H. WILLIAMS. 

